/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.beam.sdk.io.gcp.spanner.changestreams.dofn;

import java.io.Serializable;
import java.util.List;
import org.apache.beam.sdk.io.gcp.spanner.changestreams.dao.DaoFactory;
import org.apache.beam.sdk.transforms.DoFn;

public class CleanUpReadChangeStreamDoFn extends DoFn<byte[], Void> implements Serializable {

  private static final long serialVersionUID = -2016761780280479411L;

  private final DaoFactory daoFactory;

  public CleanUpReadChangeStreamDoFn(DaoFactory daoFactory) {
    this.daoFactory = daoFactory;
  }

  @ProcessElement
  public void processElement(OutputReceiver<Void> receiver) {
    List<String> indexes = daoFactory.getPartitionMetadataDao().findAllTableIndexes();
    daoFactory.getPartitionMetadataAdminDao().deletePartitionMetadataTable(indexes);
  }
}
